Porting stock ls1 heads?

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Feb 21, 2005 | 01:39 AM

#21

Lvmyz28

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does anyone know what that little bump is for in the runner of the exhaust port? You can see it on one of the before pictures I took!

Feb 21, 2005 | 02:41 AM

#22

xRaTeD

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Quote:

Originally Posted by stone4779

SO what books do you recommend?

and what tools?

I reccomend reading a few books like how to build & modify chevrolet small block heads the concepts are pretty much the same. you can find it at borders book stores..I get all my porting material from www.Ruffstuff.com they are located in sacramento C.A. Good luck and stay off the floors

Dave

Feb 21, 2005 | 08:24 AM

#23

Bo White

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The bump is for water jacket clearance through that area just behind the valve guide boss. Be real careful in that area, just blend it into the roof of the port, do not remove any material than needed.

Feb 21, 2005 | 01:22 PM

#24

xRaTeD

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No web site yet Bo ?? I tried to set one up forget it way to hard lol sombody set me up a site and i will hook it up on a set of heads lol..

Feb 21, 2005 | 01:26 PM

#25

Bo White

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This is a link to what its gonna look like www.dbtech.net/barb/portsculptor/ it will be up at the end of the week...hopefully with a dyno graph of a stock 98 M6 Formula that picked up over 7 hp/tq on a TB. This is just the main page with my TBs on it and will have cylinder head pages behind it.

Feb 22, 2005 | 05:17 PM

#26

Bo White

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Quote:

Originally Posted by fast98

i'm guessing that exhaust number is without a pipe?

222 @ .600 with a pipe.

Feb 22, 2005 | 09:54 PM

#27

Bo White

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Quote:

Originally Posted by Bo White

I have flowed two sets of mine and the usually go around 272/205 @ .600, flowing another one here in the next week or so. They are production valved heads that cc out aound 215/80.

Just got the results today and these also went 272 @ .600 and with a pipe went 222 on the exhaust and my usual 200+ without. There is room for improvement and had some insite from the person that flowed this one and will continue on with my passion.

They cced out at 218/82.